Typical Chemical Analysis

Assay

99.9%

Other Metal

<1000ppm

Expert Reviews

Dr. Myron Rubenstein, Ph.D (Polytechnic University of Turin, Italy)

Chromium carbide powder is an excellent refractory ceramic material known for its hardness. Chromium carbide nanoparticles are manufactured by the process of sintering. They appear in the form of orthorhombic crystal, which is a rare structure. Some of the other notable properties of these nanoparticles are good resistance to corrosion and ability to resist oxidation even at high temperatures. These particles have the same thermal coefficient as that of steel, which gives them the mechanical strength to withstand stress at the boundary layer level. Chromium belongs to Block D, Period 4 while carbon belongs to Block P, Period 2 of the periodic table.

Chromium carbide powder A new application for thermally sprayed coatings is as replacements for hard chrome plating. Hard chrome plating can produce a wear resistant coating with good surface finish at low costs. The chromium coating is obtained by submerging the item to be coated in a tank of chemical solution containing chromium. An electric current is then passed through the tank causing the chromium to deposit onto the part and form a coherent coating. However, there are growing environmental concerns associated with the disposal of the effluents from the used plating solution and these concerns have caused the cost of the process to increase.

Chromium carbide powder-based coatings have a wear resistance which is between two and a half and five times better than hard chrome plating and do not suffer from effluent disposal problems. They are therefore finding increasing use at the expense of hard chrome plating, particularly if wear resistance is important or if a thick coating is required on a large part. This is an exciting and rapidly growing area which will become more important as the cost of complying with environmental legislation becomes greater.

Chromium carbide powder In thermal spray applications chromium carbide is combined with a metal matrix such as nickel chrome. There is typically a 3:1 ratio by weight of carbide to metal matrix. The metal matrix is present to bond the carbide to the substrate that has been coated and to provide a high degree of corrosion resistance. The combination of corrosion and wear resistance means that the thermally sprayed CrC-NiCr coatings are suitable as a barrier for high temperature wear.

Chromium carbide powder It is for this reason that they are finding increasing application in the aerospace market. Typical uses here are as coatings for rod mandrels, hot forming dies, hydraulic valves, machine parts, wear protection of aluminium parts and general applications with good corrosion and abrasion resistance at temperatures up to 700-800°C.

chromium carbide powder

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